What is the difference between primary key, foreign key and candidate key?

0 Answers   Ernst Young,

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please tell me the informatica telecom projects interview question? like if they ask about project explanation and the difficulties and the solutions taken to solve the issues for telecom projects,e.g i am workin for a vodafone project handlin postpaid section,pls tell me wat wud be the process if i work in this ? thanks

0 Answers  

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Explain normalization in one line?

0 Answers   C DAC, CDAC,

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Explain inner and outer joins with examples.

0 Answers   Agilent,

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What advantages does DBMS have over traditional file systems?

0 Answers   ABB, Infogain,

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Explain various types of locks in a transaction? Which is better and why?

0 Answers   Agilent,

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what is tkprof tool and how it is used???

0 Answers   Genpact,

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plz suggest me the book for preparation of NIC exam.

10 Answers   NIC,

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.dbf file corrupted Dear Friends, I am using DBF file in Foxpro. DBF file corrupt and show message "Not a database file" Waiting for your reply. With regards!

3 Answers  

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What is database client?

0 Answers  

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A design problem was given in which I was supposed to make a design for the data base for a given problem.

0 Answers   Motorola,

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london school of science and technology has a software development unit,known as lsst solutions,which is responsible for developing and implementing software throughout the collegejames tristan keeps a record of all student details in the college including student id,name,and start date and phone number.There are many courses offered by LSST. For example MBA, MSc, BSc, BABS, DF, English etc. Each course id identified by course id, description, duration. Each course has many semesters. Each semester takes place during a particular term. Semester details and term details are required to be stored in the database. Each course has many subjects and same subject may be offered in many courses. For each subject many details such as Subject code, name, result and attendance are required to be stored. Every subject has mainly two assessments; one assignment and one exam. Assignment is worth of 30% and exam 70% respectively. You have been appointed as a database designer. Your job is to provide ERD with all possible entities and relationships. Note: Feel free to make necessary assumptions 3: Assignment Tasks. 1. Create an ERD for the above problem 2. Translate the ERD to Relational Data model (RDM) 3. Implement the RDM by creating the tables 4. Populate the database with your own data. 5. SQL Queries for the following tasks a. List all student details in each course along with course details b. Count and display number of students in each course. c. List student name, course name, assessment description, marks for all students.

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